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1. Exhaust System
Kubota supplies a certified diesel oxidation catalyst (DOC) assembly. FEA must use the Kubota supplied certified exhaust after
treatment and assemble the exhaust system parts according to the instructions. No other exhaust after treatment is certified
for use with these KEA standard engine models. Therefore, no other exhaust after treatment can be used.
2. Intake System
These Tier 4 common rail engines utilize a mass air flow (MAF) sensor to control the EGR flow rate. The air cleaner location
and piping layout must be installed according to these installation instructions to maintain proper performance of the MAF
sensor output. Also, to prevent decreases of engine output performance and to maintain emission compliance, intake
resistance and charge air cooler performance must be kept within certain criteria.
3. Fuel System
In order to maintain the common rail fuel injection pump performance and durability the pressure and temperature of the fuel
must be checked during the application review.
4. Engine Control System (Engine Control Unit (ECU)
The Engine Control Unit (ECU) is considered an emission control device. It is critical to ensure that the ECU is installed
correctly and that the requirements and specifications are checked during the application review. The electrical signal must be
within Kubota specification. Otherwise, engine and emission performance cannot be guaranteed.
5. Engine Control System (Engine Control Unit (ECU), Wire Harness, Operator Display Panel)
The wire harness is also considered an emission control device. It is critical to ensure that the wire harness is installed
correctly and that the requirements and specifications are checked during the application review. The electrical signals must
be within Kubota specification. Otherwise, engine and emission performance cannot be guaranteed.
Objective Items
Kubota Emission-Related Installation Instructions
Document Number : KEA-STD-03-CRS-DOC-001-
④
Page No. 4
Appendix 5
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